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Bias in sediment chemical weathering intensity evaluation: A numerical simulation study

Earth-Science Reviews, 2023
Hanjing Fu, Xing Jian, Hanqing Pan
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Lithium Isotope Reveals Tight Links Between Chemical Weathering Intensity and Indian Summer Monsoon in South Asia

Paleoceanography and Paleoclimatology
AbstractThe relationship between catchment silicate weathering and short‐term (<104 yrs) variations in the Indian summer monsoon (ISM) remains a topic of debate. To investigate this link, we present a comprehensive analysis of lithium isotopic composition (δ7Li), neodymium isotopic composition (εNd), and chemical index of alteration (CIA) in the ...
Jingrui Li, Xuefa Shi, Shengfa Liu, Min‐Te Chen, Hui Zhang, Zhaowei Jing, Xiaoming Miao, Rui Jiang, Dongyong Li, Somkiat Khokiattiwong, Narumol Kornkanitnan   +10 more
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Intensity of Chemical Weathering in the Late Precambrian: New Data on the Riphean Stratotype, South Urals

Stratigraphy and Geological Correlation, 2023
А. В. Маслов, V. N. Podkovyrov
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Limited change in silicate chemical weathering intensity during the Permian–Triassic transition indicates ineffective climate regulation by weathering feedbacks

Earth and Planetary Science Letters, 2023
Vast emissions of volcanogenic greenhouse gases resulted in rapid global warming during the latest Permian mass extinction (LPME, ∼252 Ma), the impact of which on continental chemical weathering conditions was complex. Here, we compile Chemical Index of Alteration (CIA) records from 25 terrestrial and 12 marine sections with a near-global ...
Xu, Guozhen, Shen, Jun, Algeo, Thomas J., Yu, Jianxin, Feng, Qinglai, Frank, Tracy D., Fielding, Christopher R., Yan, Jiaxin, Deconinck, Jean-François, Lei, Yong   +9 more
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Global quantitative model of chemical weathering intensity

2021
Global quantitative estimation of intensity of recent processes of chemical weathering and connected with that newly formed secondary minerals is given. Shows that all clay and at least 50% of silica deposits of actual sedimentary rocks of Earth crust represent the hydrogenous product of interaction processes between natural waters and erupted mountain
V.P. Zverev, O.Y. Varvanina
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Intense chemical weathering in southwest Japan during the Pliocene warm period

Journal of Asian Earth Sciences, 2019
Abstract Bulk chemical composition and mineral composition of the Pliocene sediments in southwest Japan reveal the effects of source rock compositions and grain sizes, as well as the relationship between sedimentary environments and the degree of chemical weathering in the Pliocene warm period.
Nozomi Hatano, Kohki Yoshida, Yoshiko Adachi, Eiji Sasao   +3 more
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Mineralogical changes during intense chemical weathering of sedimentary rocks in Bangladesh

Journal of Asian Earth Sciences, 2002
Abstract Bangladesh is situated in a subtropical to tropical climatic zone. A recently weathered crust has developed on sedimentary bedrock (sandstone, siltstone, shale and claystones) of Tertiary–Quaternary age. Weathered samples were collected from 16 sections totaling 68 samples and were analyzed mineralogically.
Md.R. Islam, Rojstaczer Stuart, Aario Risto, Peuraniemi Vesa   +3 more
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Magnetic parameters indicate the intensity of chemical weathering developed on igneous rocks in China

CATENA, 2015
Abstract Continental weathering plays a key role in earth surface processes by linking Earth's spheres and producing material for cycling. Previous studies have proposed numerous weathering indices for the evaluation of chemical weathering intensity.
Ni Su, Shou-Ye Yang, Xiao-Dan Wang, Lei Bi, Cheng-Fan Yang   +4 more
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A ∼6Ma chemical weathering history, the grain size dependence of chemical weathering intensity, and its implications for provenance change of the Chinese loess–red clay deposit

Quaternary Science Reviews, 2010
Abstract Major element chemical analyses of the Baishui loess–red clay sequence (35° 24′ 10″N, 106° 54′ 43″E, Gansu Province, China) reveal that, the chemical weathering intensities inferred from CIA (chemical index of alteration) values have progressively weakened and increased in amplitude with decreasing age.
Shangfa Xiong, Zhongli Ding, Yuanjian Zhu, Ru Zhou, Haijian Lu   +4 more
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Reduced chemical weathering intensity in the Qaidam Basin (NE Tibetan Plateau) during the Late Cenozoic

Journal of Asian Earth Sciences, 2019
Abstract Cenozoic basin sediments around the Tibetan Plateau are valuable archives that can be used to reveal long-term interactions among tectonics, climate and weathering. However, the reconstruction of silicate weathering histories in this tectonically active region is consistently hindered by the presence of frequently embedded conglomerate and ...
Jing Bao, Chunhui Song, Yibo Yang, Xiaomin Fang, Qingquan Meng, Ying Feng, Pengju He   +6 more
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